Sheet-metal roller-bearing furniture-caster.



110.806,435. y' PATENTED DEG. 5, 1905.

' M. B. SGHBNGK.

SHEET METAL ROLLER BEARING FURNITURE EASTER.

y l.IPILI'ORTIQN FILED HARM, 1R05. n

IIIIIH UNITED STATES' rAirnNr onirica.

MARTIN B. SCI-IENCK, OF MRIDEN, CONNECTICUT. ySHEET-.METAL vROLLER-BEARING FURNITURE-CASTER..

Zullo all whom t may concern:-

Be it known that L MARTIN B. SGHENCK, a

drawings constitute partjof this specification,

and represent, in-

Figure 1, a perspective view of a caster constructed in accordance with my invention; Fig. 2, an enlarged View thereof in vertical section; Fig. 3, an enlarged view showing another way of securing the outer cup to the long pintle; Fig. 4, a detached view of the long pintle in its initial form.

My invention relates to an improvement in sheet-metal roller-bearing furniture-casters, the object being to produce at a low cost for manufacture a simple, light, compact, and very s trong article.4

With these ends in view my invention consists in a caster having certain details of construction and combinations of parts, as will the production between them of an annular vrunway 7, receiving a series of fiat sheetmetal rollers 8, which travel upon the iiat bearing-face 9 o f the wheel-frame 5 and upon the bottom of the outer cup 3. In its initial formthe long pintle 2 has an annular flange v 10, located betweenits lower end and its stud 2 and adapted to enter a recess 11, formed inv the upper face of the outer cup 3 and concentric with the stud-hole 12 thereof. After the stud 2EL has been passed through the said stud-- hole 12 a reinforcing-washer 13 is applied to the said stud, the'projecting endof which is l then ,backset against the washer,s'o as to forma heavy annular backset-iiang'e 14, where- .by the outer cup 3 and the Washer 13 are firmly gripped between the anges and 14, aforesaid. Under this construction the outer cup is virtually made solid with the `pintle and Specification of Letters Patent.

Application filed MfLTGh 14:, 1905. Slal N0. 250,013.

Patented Dec. 5, 1905.

reinforced by-the washer 13. In "backsetting the stud 2a it is thickened up, so to speak, and also given a somewhat tapering form. The stud is then passed through the stud-hole 15 of the inner collar 4 and the studhole 16 of the wheel-frame 5. A retaining- Washer 17 is then applied to the projecting' end of the stud and brought to abearing upon a shoulder 18, formed thereon at the time of backsetting it. The extreme outer end of the stud is then upset against the retaining-washer' 17 to form a head 19, whereby the said washer' is secured in place. The cup4and the w'heelframe 5 are thus retained upon the stud on which the frame 5 must be free to swivel. As to the cup 4, that may be made to swivel or not, as desired. Its function is merely that of a ring to form the inner wall of the runway 7 and'is, in effect, an inner runwaypiece.

In the modified construction shown by Fig. 3 of the drawings the reinforcing-washer 13 is omitted and the stud 2 backset, so as to seat the annular backset -flange 14 directly upon the inner face of the outer cup 3, which is thus gripped between the said iian ge 14 and the flange 10. This construction which omits the washer is of course cheaper and may be adopted in casters of small size or casters for usel in situations where the weight they are to carry is not of the heaviest. v

In view of the modification shown and described and of others which may obviously be made I would have it understood that 1 do not limit myself thereto, but hold myself at liberty to make such departures therefrom as fairly fall within the spirit and scope of my invention. Thus, if desired, the inner cup 4 may also be inverted.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent, is` v c 1. In a sheet-metal roller-bearing furniturecaster, the combination with an inverted cup, of an inner runway-piece enough smaller than the said cup to form arunway, a wheel-frame, rollers located in the said runway and bearing in the said cup and upon the said wheel-frame, anda long pintle having an annular flange for engagement with the upper-face'of the cup,

and also formed at its lower end with a stud which latter is backset to form an annular iiange which coacts -W'ith the other iange in binding the pintle and cup together, and the said stud being also ,backset to form a shoulder; and a retaining washer seated IOO against the said shoulder and engaging with thedWheel-frame which it holds upon the said stu 2. In a sheet-metal roller-bearing furniturecaster, the combination with an inverted cup, of an inner runway-piece enough smaller than the said cup to form a runway, a wheel-frame, rollers located in the said runway and bearing in the said cup and upon the said wheel-frame, a reinforcing-washer placed upon the bottom of the cup, and a pintle having an annular flange for engagement with the upper face of the cup and also having at its lower end'a stud which latter is backset against the said washer to form an annular flange whereby the cup is rigidly secured to the pintle, and the said stud being also passed through the said wheel-frame which is swiveled upon it.

3. In a sheet-metal roller-bearing furniturecaster, the combination with an inverted outer cup, of an inner cup enough smaller than the same to form a runway, a wheel-frame, rollers located in the said runway and bearing in the said outer cup and upon the said Wheel-frame, and a long pintle having an annular ange `for engagement with the upper face ofthe outer cup and also formed at its lower end with a stud which latter is backset to form an annular flange which coacts with the other fiange in binding the pintle and outer cup together, and the said stud being alsof backset to form a shoulder; and a retaining washer seated against the said shoulder and engaging with thedwheel-frame which it holds upon the said stu In testimony whereof I have signed this specification in the presence of two subscribing witnesses'.

MARTIN B. SCHENCK. Witnesses:

CLARA L. WEED, GEORGE D. SEYMOUR. 

